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mcduff last won the day on June 26 2021

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LabVIEW Information

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    LabVIEW 2018
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  1. This is way out of my league, and not sure if I understand correctly, but this link shows how to get the pointer to a LabVIEW array. Not sure if you have seen this already.
  2. This is a quick way to do a X-Y Plot, no arrays of x and y data, or bundles of x and y points. To the OP try something like this
  3. Cross-posted on the dark side https://forums.ni.com/t5/LabVIEW/How-I-plot-the-timestamp-in-the-graph-of-the-x-axis-and/td-p/4204975
  4. mcduff


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  5. The issues that I have found are frustrating are the following: Staff go on field test with their laptops in another timezone, and forget to change the timezone. Although the metadata is in UTC, when they look at the time in their file stamps(time created, etc,), they get all confused. Timezone caching, bit me on a field test, luckily I noticed. Started the program, realized I had not changed the TZ, and then wondered why my timed start did not update correctly.
  6. Not sure if this is related, but I have had an issue where if the LabVIEW program had been running and the timezone was changed, the time in LabVIEW would not be updated until the program was restarted. It appears LabVIEW caches the the timezone information and the beginning of the program and never receives an event that the timezone has ben updated. I wonder if it does the same for DST. And yes, I use UTC times for saving metadata in the file, but the users of the program like a local time stamp on the file name such that it matches their notebook log.
  7. It looks like the external dll call has an extra buffer allocation, don't know if it is real or not, just what NI is reporting, whereas, the native implementation does not. See below. That may account for the speed difference. EDIT: Execution Trace toolkit shows the same.
  8. FYI, cross-posted on the dark side https://forums.ni.com/t5/LabVIEW/USB-6215-10-Hz-triggering-with-2-TTL-signals/td-p/4181960?profile.language=en
  9. Maybe not a new feature, but somewhere in the talk they mentioned a 2021 LabVIEW license would give you access to Windows, Linux, and Mac versions, no separate purchases required.
  10. Don't disagree at all with the increase of computational power, but JPL has rules for code. I think having a set of rules helps to reduce possible errors.
  11. You thought it out more than me. The test will be when I get 2021.
  12. Just reporting that I used the DMC image control, had the box checked, and did NOT have a black image display. (LabVIEW 2020SP1, 64bit, Win10) No commentary on whether to check/uncheck box. Just suggesting a possible work around for folks who may want to check the box.
  13. Not commenting on whether to allow future versions ... However, if it is checked and you want to use an image control that won't change colors in the EXE version, the Image Control in the DMC controls package available on VIPM does not suffer from this problem.
  14. MAT files are now just H5 files(HDF). Look at the library https://h5labview.sourceforge.io/ and find the example for writing a MAT file. You just need to add a special header in the beginning. I assume the dlls needed will work on Windows server, but am not sure.
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